Button drilling machine



June 21, 1932. o. WETTE BUTTON DRILLING MACHINE Filed Aug. 27, 1929 4Sheets-Sheet l "fte,

Julie 21, 1932. o, W|TTE BUTTON DRILLING MACHINE Filed Aug. 27. 1929 4Sheets-Sheet 2 @fa 7W 'Eg MM.

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Il.; In mllinm m June 21, 1932. K C., Wfl-TE ,863,737

BUTTON DRILLING MACHINE Filed Aug. '27. 1929 A 4 sheets-sheet 5 Jam@21', B932. o. WITTE l?863,737

BUTTON DRILLING MACHINE Filed Aug. 27, 1929 4 Sheets -Sheet 4 65 3i?. J6O I afm Wirf Patented June 21, 1932 OTT() WITTE, OF PHILADELPHIA,PENNSYLVANIA BUTTON DRILLING` MAGHINEA Application filed August 27,1929. ASerial No. 388,676. v

ri`his invention relates to button drilling machines, particularly ofthe horizontal type, wherein a pair of opposed rotary drills operateupon the button from opposite sides thereof, and drill, ream andcountersink the duce an automatic machine by which either` a `two-holeor a four-hole button may be produced.

Another object of the invention is to pro-V duce al button drillingmachine in which one, or either of the drills, is utilized for cutting atransverse kerf on the face of the button, from hole to hole for thelpurpose of providing a ,thread groove.

Another object ofthe invention resides in means whereby the range ofhorizontal longitudinal movement of one, or either of the drills may beadjusted, whereby one ofsaid drills `may be utilized for counter-sinkingthe button from one side thereof, while the other drillis utilized forpenetrating Vthelbutton and Vcountersinking the hole upon the oppositeside of the button, in registry with the countersink produced .by thefirst said drill.:

It is a further object of the invention to provide a blank drillingmachine in which a single holemay be drilledto produce such articles asgame pieces.

It is a further object of the invention to l0 produce a machine in'whichthe various operating elementsthereof are readily adjust-` able, wherebycertainof the: functions of the or size of buttonbeing drilled. A

These and further objects and .advantages of theV invention'will appearand become readily apparent, especially to those skilled in the art ofbutton drilling machines, upon 5 reference to the following specication.

' In the accompanying drawings, formingav part of this specication,

Figure l is a side elevation of the vm'a-y chine embodying theinvention;

Figure 2 is acentral longitudinaly section 55" o'f the machine,"taken onthe line 2 --2A of Figure;

Figure 3' is a vertical sectionalview taken on the lines 3e3 of Figure2, looking in the direction of thearrows; f

Figure 4 is an end view f the machine, viewed from the right in Figure1; i Figure 5 is a top plan view of the button blank hopper;

Figure 6 iS a top 101211 view of the machine 16s? without the buttonhopper;

Figure 7 is a bottom view ofthe machine; Figures 8 and 9 are front andvertical sec-`r tional views .respectively of ra four-hole type Y, ofbutton which may be drilled withthe mai--v chine;and.; '1 v j f Figurel() is a front View of a two-'hole type of button. y

Referring now more particularly to the accompanying drawings by numeralsof ref` 75 erence2-The Vbed 1 of theV machine-*is provided with acentral longitudinal slot and is supported throughthe mediumof legs 2,arranged in lpairs at opposite ends thereof, said bed having kjmirna'ledtransversely upon the 80 bottom thereof'throughrbearing blocks 3, aVpair of cam-carrying shafts 4, 4, arranged respectivelyupon oppositesides of the Vlongitudinal center of thesaidbed 1*. Since the drilloperating mechanism, including the S5 drills and their supports areduplicated to a major extent upon opposite sides of the button feedingand chucking mechanism, to be hereinafter described, reference'will bemade to each of such mechanisms by liker'eference 90 characters, exceptas to those elements of the' construction which, however, yare not"commachine may be dispensed with, oraltered to snit conditions, dependentupon the type monto both.

Journaled in' bearing blocks 5 uponthe rear of the'bed l, is a powershaft 6, having95 upon lone end, a pulley T through which it may bedriven by a suitable drivebelt 8 from a source of power, not shown.Splined to the power shaft are a pair of worm gears 9,

which mesh with worm wheels 10 keyedfon' ,ma

'.It will also be noted that each of the pockets 16 iS; beveled ononeside and has its other the transverse cam-carrying shafts 4 and 4,

and through which the drills are adjusted to cutting positionv withrelation to the button in the chucking mechanism, to be later described,and to which said buttons are deli'v:

ered from a hopper 11, supported from the bedof the machine by an arm12.v The buttons are fed from the-hopper`,ithroughthe medium of a rotarydisk 14, having` a plurality of diagonal slots 15, the inner ends ofwhichpterminate in circular pockets :16, regf istering progressivelywith an opening 17 in the upper end of a button chute18,icarried by andbeneath the hopper l1.

It will be understood that buttons or button blanksvare usually sharpand flat, or concave on one side androunded or convex on the other side,andwhen the button presents its convex face to thevpocket, it will slideoutas the disk rotates and lifts it because the pocket Y cannot` holdit,but if thebutton presents its sharp side to the pocket, it will catch onthe edge of the pocketv and be carried'pupl bythe disk 14. Thepocketsarev only made deep enough to hold the buttons when `the sharp`edgesfof the buttons are presented thereto, and are not deep-enough tohold the button when the rounded edge is presented thereto.

side left straight, as shown Figure 5.., ,d The. rotary disk 14, whichis rotatable on the axis 19, is driven through lthe medium' of a wormand gear arrangement 20shown in `dotted lines in Figure 1 by .a sprocketchain 21, trained over a small sprocket wheel` 22,y

the shaftof which drives thewormvand gear arrangement` 20, and arelatively ,larger` sprocket wheel 23, fast on the transverse camcarrying `shaft 4,YY .an` idle pulley 24 being provided to maintain saidchain21 taut.

Referring now more especially to Figures plate being provided with anvopening 26,)-r

over which' the buttonV will register when position for drilling.

The button chucking mechanism, shown,

morey clearly in Figure 3, comprisesa pair `of jaws 27, `,suitablyrecessed; upon' their ,opf posed faces to accommodate the button indi-kcated at, B, vand movable rtransversely of Qthe stationary plate25. inupperand lower guides 28 and 29 respectively, which cooperate with,guide plates 30'carried by the chuckjaws 27,:V the guide plates 3 0being .turn ,providedv with ribs. 31 which are received within inr fWardly and upwardly inclined cam slots 32 formed in cam plates 33,carried by a vertically movable frame 34, the cam plates being guided intheirvertical movements with the frame 34 by guide plates 35, iixed tothe side edges of the stationaryplate 25 by screws 36.

It will be observedthat the face of the stationary` plate 25 is providedwith vertical` slots 37 which effectively clear the contacting faces ofthe cam plates 33 and stationary plate V"35' of any accumulation ofbutton dust, and

preventzclogging by such dust, which, would` eventually Anecessitatestopping of the machine and removing the parts to clean the same. Amachine provided with these clearance 'slots will run indefinitelywithout clogging,lwhere as, without the slots, itfis neces saryy toshutdown the machine every few days and'remove the dust which packs betweenthe contacting working faces of the parts in question and results inbinding of said parts. The opposed edgesl of the chuckingjaws27, arefurther provided withbevelled or rounded portions 38 which' serve thefunction of cams cooperating with the. terminals. o fthebuttonblank-feedingi'spaced fingers 39, formed on the lower end of aplate 40mountedv forver-v tical adjustment, bymeansof a slot and screwconnection 41on a swinging bar 42, pivotally mounted at 43 upon theforward ends of the arms 44 of a .yoke Y45 embracingthe upper reducedendof the stationary plate 25.

' The frame 34, which carries the cam plates Y' 33 for operating thechuckingl jawsr27 is moved lupwardly to release said jaws, and

consequently thebutton, through the medium `of a lever 56, shown more"clearly in Figure 7,

said lever being pivoted intermediate itsends` ona stud vformedon theinner side ofthe' bed frame, and to the right side of the machine, asviewed in Figures 1, 2v and 7. The

free end of the lever 5.6, is providedwith a lat v erally extendingplate 58, disposed beneath the lower end ofY an adjustable lifting screw5,9 threaded into the Vframe 34 and'secured by a locknut 60, and so designedthat, when said len ver 5GI is roclredon itspiyot by means of acam.y

61 keyed on transversecam carryingshaft 4',

the frame 34-.with the y,camplates 33 vwill be elevated .to cause thechuck jawsto release the button, the frame being returned toitslowermost positionthrough a pair of rela.- tively heavy coil tensionsprings 62 connected at their ends respectively to the sides of the ,dframe 34 and arms v63 Vsupported from the underside of the bed 1, 4astop screw 64 being adjustably threaded'into the frame to limit thelower extent to which ,said frame will be moved. VIt will be understoodthat as thc frame is moved into its lowermost'position by the heavysprings 62, the chuckY jaws 27 will be cammed inwardly and grip thebutton in working position. lBy vertical adjustmentof the stop screw, itwill readily beseen thatthe chucking position ofthe j awsto accommo--date largerv or .smaller buttons, lmay be regulated. The cam 61 on shaft4, and 53fonshaft 4, are so timed that the button Vfeeding fingeredplate 4() will be in elevatedposition when the chuck j awcamming.mechanism is in lowered position to grip the button, as shown in Figure3, and the lingered plate upper end of a vertically slidable fplate47,l

having a vertical elongated drill clearance slot 48, said plateterminating at its lower end in a lug 49, which in turn cooperates witha roller on one end of a lever 51 pivot-V ed at 52 intermediate it endsto the bed of the machine. Splined upon the transverse shaft 4 as shownin Figure 2, that is, onthe left of the machine, is a cam 53, having asingle elevation, which is arranged andV so timed with the cycle ofoperations of the machine, that the lever is operated to elevate theverti-cally movable plate 47, and to permit it to be lowered once forevery button which is drilled. The plate 47 is returned to itslowerposition, wherein it feeds a button tothe chuck jaws, through the mediumof a tension spring 54, the ends of which 'are attached respectively tothe'yokethrough the medium of the screws 46 and a iiXed part of the bed:guide strips 55.

Referring now to the button drilling and countersinking mechanismV shownmore particularly in Figures 1 and 2, I have shown two drill spindleseach of which is mounted iin bearings 66 and 67 atthe forward and rearends respectively ofa vertically oscillatory spindle frame 68, providedwith trunnions 69, having their bearings'in a pair of spaced plates 70,formed integral with ya standard v71 and carried by a slide plate `7 2,which is adapted to reciprocate longitudinally of the machine on the bedv1. between guide bars 73 having upper guide ledges 74 which restrainthe slide plate 72 against vertical movement lon said bed.

Longitudinal adjustment of the drill 'spindle in its bearings is madepossible through a series of collars 75 and lock nuts 7 6, which ofthemselves do not constitute the major VYfeatures ofpmy invention, sincevarious means may be employed for permitting the longitudinal adjustmentof the drills.

The slide plate 72 is slightly less in width V than the distance betweenthe guide plates A73,'the side edges being inclined inwardly`dependingupon whether abutton with a singlecenter aperture, or a two orfour hole button is being drilled. This slight inclinationA of the sidesof the slide plate is shown in Figure 6, being indicatedby dotted lines.F orthe purpose` of transmitting reciprocatorymovements to each slideplate 72 andto the drilling mechanism, a lcam 77 is provided with laseries of elevations-78 and 79,

the elevations 7 8' being of one radiiV and the elevations 79y being ofa different radii, for purposes Vwhich will be laterexplained.

These cams 77 which are suitably keyed on the transverse shafts 4 and4', duringrotation, engage a'rollerl 80, journaled onan arm 81 carriedby a longitudinally reciprocatory plate 82jwhich in turn functions asthe support upon which the Vslide plate 72 carrying thefdrill operates.`The cams 7 7functionfto reciprocate the plate 82, four times in onedirection for every four hole button being drilled, the' plate beingreturned tol initial position each time by a coil tension spring 83,

connected at its ends respectively, with a'postA 84 on the oscillatoryplate'7 2, anda fixedpart 85 on the machine-frame.l A transverse bar 86serves as the forward support for the reciprocatory plate 82, while therear rests upon the frame of the machine as shown in Fig' ure 2. For thepurpose of transmitting reciprocatory movement lfrom each of the plates82 to the oscillatory plates 72, there is pivotally supported at itsupper portion at each end of the machine, at 87, between a pair ofuprightsl 88, a swinging plate l89 provided with a vertical series ofthreaded apertures 90, in any one of which is adapted to be received, anadjustable thrust screw 91, the position of which in any one of saidholes 90, determines the extent of movement of the drill in alongitudinal direction. The cuter end of the slidable plate 82 isprovided witha plate 92, which extends upwardly over the lower end ofthe swinging plate 89, in such manner, that, when the slidable platemoves in either direction, it simultaneously swings the'swinging plate89 upon its pivot, transmit-ting movement through the thrust screw tothe standard 71 which supports the drill f vide means forfirstvoscillating the drill spindle laterally and fort-hen moving thespindle ice vertically,'andV to this end. means are provided kforseparately performing each of these functions, the mechanism fortransmitting an oscillatory motion to each of the plates 72 and tothe'drill spindle 65 being first described.'k The forwardV end of 4thespindle frame 68 rests upon a Vhardened metal pilot 94 havingV a planeupper circularface, therunder side of the-spindle frame being -pro-` .i3Y

vided with a hardened metal wear strip 96. Keyed on each of. shafts 4and 4, is a cam 97 having a pair of facial cam elevations,

suitably spaced apart, and cooperatingiwith a roller on the free end ofalever 98 pivoted intermediate its ends -in a bearing block 99 fixed onthe .side ofthe'bed frameVAt its other end, said lever is provided withan adjustable set screw 100, which passes through z aregistering openingin the guide plate "7 3 on the bedy frame, and engages one side of the`Y oscillatory plate 72 to move it laterally of the machine and properlydirect the drillrcar- V1n my machine to'lnot only drill holes at two lpointsin a horizontal plane, but also to drill.

holesat two points in a vertical plane, this Y feature necessitating theemployment of mechanism for periodically raising and lowering the drillspindle and its frame so that the drill point is properly located withrespect to the button.V y ,i

At this time, with particular reference to Figures 2 and 7 there will bedescribed a mechanism, through which -therfunctions of the machinejuststated, are performed. Arrangedv at the forward endof each of the ydrill frames is the pilot 94, previously/ireferred to, this pilot havinga round stem 103 mounted for vertical movement as well as roi tarymovement in a .bushingi104, threadedV upon its exterior, andyverticallyk adjustable ina cross-bar 105, forming a part of the bedframe. Into-the lower end `ofthe stem 103 is threaded ascrew'106, thehead of Ywhich may be engaged by the inner end 107' Vof a lever 108pivoted at 109 to the bed frame 1.v

The other end of the'lever 108 is provided with a friction roller 110which cooperates with a cam 111 splined or'keyed on the transverse shaft4', said cam being so formed that the ,pilot 94 is raisedV and loweredonce for every four reciprocations of the drill.. The bushing 104 isprovided with a lock nut 112 through whichjit may be locked in YproperVelevation. j In'connection with the pilot feature, it is,of course,unnecessary to bring the drill elevating Vmechanism int-o operation whendrilling a two-hole buttonof the type shown in Figure 10, and when sucha button isbeing drilled,1it is desired that the pilot i control'mechanism be thrownV out of operaf tion, and to this end, the screw106,is either removedfrom the pilot stem, or else screwed down farenough into the'stem that the inner end of the lever 108 does not engagethere-`Y with, during its rocking movements. vThus,

the pilot is idle' at such times. lWithin the main` drive pulley 7 is asuitable clutch mechr anism, not shown, which is controlled by 'alclutch lever l116 carried on abracket 117'on the bed of theV machine. Yf j In eachof'the forms of buttons. shown in Figures 8, .9 and 10, itwill beV observed that the holes 119 are notl only countersunk from bothsides, but that the openings transversely of the button on the flat sideare joined by kerfs 121,.which serve as Vrecesses for and to preventcutting of the sewing thread, and

the garment, and it is one of the functions v also resultin thethread-belng below the` pla-ne of the button face when sewed upon of mymachine to automatically cut thisy kerf from hole to hole, inthe mannerwhich will be set forth in the following description of the operationofthe machine.

l 'Y C Operation' Assuming that the elements of the machine are in thepositionjshown in Figure 2, and

that a button blank has been delivered from the hopper 11 yinto thefeeding mechanism where it is held by the feed fingers 39 on plate 40cam 53 on shaft 4 rotates until the low point thereon permits the lever51 to be rocked, thus allowing the vertieally-slidable Y plate 47 underthe action oftension spring 54'to be lowered, said plate carrying withit' the yoke 45 bringingthe button blank X intermediate the chuck jaws27. During this Y movement of the yokeand the feeding plate 40, theehuckjaws are moving inwardly under the actionofthe cam plates 33, andaslthey approach the button .gripping position, the

beveled portions thereofengage the tips of Y the feeding fingers 39, andcam or wedge them Y outwardlywith theswinging plate 42 on the yokeagainst the actionl of the tension spring 120 releasing the buttonblank,v the action of,

the cam plates 33 beingY controlled/by the action of the rotary cam .61on shaft 4', and lever 56 acting on the frame 34. The button blank isnowheld in fixed position by the chuck, and while thus held, drill '65(No.A 1)

is caused through the cam mechanism 77 to be moved` toward'thebutton,being rotated bythe pulley and belt 114-115, the drill penetrating the button blank only. about onehalf its depth,andv forming a countersink;

the vdrill now recedes under the action of the spring 83, and theopposing drill 65 (No. 2) on the other side ofthe button comes .into

action through the camon shaft 4,"and due toa certain adjustment of thescrew 91 'on the swinging plate 89, will .have agreater Y extent oflineal movement than the first mentioned drill (No. 1), penetratingthebutton Y through the countersinkmade by the vfirst drill, andcountersinking the button on this side also. The second drill l(blo. 2)now re-vv cedes', andthe iirst drill, through the action y of the cam 97on the side of the machine frame, causes the drillframe to, beoscillated tobring ldrill No. 1 opposite a'new drilling :linearer dragsacross the button face, cutting a kerf from the rst hole drilled to thesecond hole which it is about to drill.

Both of the drills are now permitted to be lowered to a new drillingposition, due to the action of the cams 111 on levers 108 and pilots941-, at which time both drill points are under the first holes drilled.Operation of each of the drills (Nos. 1 and 2) is now repeated, and

when the button is fully drilled, the cam` plate carrying frame 34 israised by the cam mechanism described, and the `button released when itdrops into a receptacle below the machine. The cycle of operation is nowrepeated, it being understood that, with relation to the drills, the camoperating mechanism is so arranged and timed that Vthe operation ofdrill No. 2 is always slightly in the rear of No. 1. It is to beunderstood that the extent of movement of the drills may be readilyadjusted by adjustment of the screws U91 in the swinging plate, and thatthe timing of the operations of the several elements of the machine maybe readily changed by substitution of different forms of cams. Whendrilling atwo hole button, it is, of course, understood that the pilotoperating mechanism is dispensed with in the manner earlier explained. y

Many slight changes might be made `without in any way departing from thespirit and scope of the invention.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is 1. In a button drilling machine, buttonfeeding means, button chucking means, a pair of opposed button drills,meansl for longitudinally reciprocating said drills in alternation, inone horizontal plane, means for reciprocating said drills in alternationin a second horizontal planemeans for oscillating said drills inalternation, longitudinal reciprocation and the oscillation being sotimed as to cause oneof said drills to cut a kerf transversely of thebutton during the oscillating movement thereof.

2. In a button drilling machine, button feeding means, button chuckingmeans, a pair of opposed button drills, means for longitudinallyreciprocating said drills in alternation, means for transverselyoscillating said drills in alternation, means for vertically oscillatingsaid, drills in alternation, longitudinal retlating'movements thereof.

`: I 3. Inu'alublitton drilling machine, button T70iciiiP,Iocationfanditheoscillation being sotim'ed as .to cause one v ofsaid drills to cutila' kerf transversely of the fbutton duringthevoscilfeeding means, button 'chucking means,a pair fof opposed'drills, means: for longitudinally reciprocating` saidV drills, means forvadjusting the rangejof. longitudinal movement of' either of saiddrills, means for transversely oscillating said drillsjand meansfor'verti'cally oscillating said ldrills.

" 1; Inv a button drilling niachine, button lfeeding means, buttonchucking means, a pair of opposed drills, means for longitudinallyreciprocating said drillsin alternation, meansv for transverselyoscillating said drills in lalternation, means: 'for verticallyoscillating said 'drillsilin alternation, and means lfondisconnectingsaid verticallyoscillating means. V"-5. In a button drillingmachinabutton Qfee'ding means,v button' cliucking means,"'a

pair'of Vopposed drills, means for advancingY and retracting saiddrills, one in advanceof the'other, means for controllingv the range off-longitudina'l movement of'one of said drills, rmeans for transverselyoscillating said drills,

onein advance ofthe other, onedrill being vreciprocated fartherthantheother and varyingin range of longitudinal movementltiined to theoscillation so as to cut a lierf during the transverse oscillationthereof in one direction. 6. In a button drilling machine, a machineframe, button. feeding means, button chucking means, a pair of opposeddrills, a pair of transverse rotary shafts, journaled in said machineframe, a series ofcams on each of said shafts for each of said opposeddrills, means intermediate each of said cams and saiddrills forlongitudinally reciprocating the drills .in a plurality of horizontalplanes, and transversely oscillating said drills in alternation. y

7 In a button drilling machine, a machine frame, button feeding means,button chucking means, a pair of opposed drills, a pair of transverserotary shafts journaled in said ioo ilo frame, a series of cams on eachof said shafts for each of saiddrills, means'operated by each of saidseries of cams for longitudinally reciprocating said drills,transversely oscillating said drills, and vertically oscillating saiddrills in alternation.

8. In a button drilling machine, a machine bed frame, button feedingmeans, button chucking means, a pair of drill frames mounted upon saidbed frame, a pair of transverse rotary shafts journaled in said frame,a` pilot for Asupporting the forward end of each of said drill frames, arotary drill journaled in each of said drill frames, cam mechanism onsaid shaft for longitudinally reciproeating each of said drilll frames,cam mechanism on saidshaft for oscillating each of said drillframes,fcam mechanism on said shaft Y ,fr vertically oscillatingachofsaiid pilots, i and meansinterm'ediate Veach of "said drill'frame'r'eciprocating'g means and said drill frame for adjusting therange of longitndinal `re'cip'rocatory movementfof said drillframes. '9."Ina btton' drilling machine, a machine v frame, button feedingmechanism, button ehncking mechanism,'meansl oni said button chcking"mechanism for' releasingsaid'button from the feeding mechanism to thechucking mechanism, means for adjusting; the del gree of movement of the`j avvs of said chuckfingnechanism, a pair of opposed drills, supportingframes for said dril1s,rmeans for lonitndinallfy` 'reciprocating saidsupporting raine'sin alternation, means for transversely oscillatingsaid drill supporting frames in alternation iny apluralitjT ofhorizontal planes in sl'iecesjsion, means for vertically-oscillatingsaid drills in alternation, apilot mechan'isn `1n 'connection with saidvertically oscillating mechanism for supporting the forward ends of thesiipporting frames, means for connecting or disconnecting said pilotmechanisin,V and means for governing the range of longitudinal movementof either of 'Said drills.' v v In testimony whereof have alixed mysignature.

erro were?

